<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
<h1>登录</h1>
<form action="/login" method="post">
    <p>用户名：<input type="text" name="username"></p>
    <p>密码：<input type="password" name="password"></p>
    <p><button type="submit">提交</button></p>
</form>
<p>当前已登录用户：<span th:text="${session.username}"></span></p>
</body>
</html>